To pimp with an aggressive style. Instead of persuading his tricks with drugs, a Gorilla Pimp would beat his hoes. Gorilla Pimps use violence and intimidation rather than promise of money, stability or protection to make a prostitute do what they want.

"I'ma ask that bitch once! And if she ain't got my money, I'ma beat that bitch so bad, she won't be able to suck dick strait for a week!"
"Fuck you hoe, You'll do what the fuck I say or I'll knock all your teeth out! I feel like doin' it anywayz just so you can suck dick better, so watch your fuckin mouth!"
"Don't you know I be Gorilla Pimpin? My hoes never get outta line!"